phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '-1' for key 'session_user_id'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in) VALUES ('bd0dfe2ba4f732a946b65243093c0c6e', -1, 1714333119, 1714333119, '031196a3', 21, 0)

Line : 158
File : sessions.php